Mã sản phẩm: E312-17-2.5

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OK 68.81 is a high-alloyed electrode which deposits a ferritic-austenitic duplex weld metal with approx. 40% ferrite. It is resistant to stress corrosion and is highly insensitive to dilution. Good scaling resistance up to 1150°C. OK 68.81 is used for joining dissimilar steels, steels with reduced weldability and buffer layers prior to hardfacing. Applications: rolls, forging dies, hot-work tools, dies for plastics and so on.


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Typical Tensile Properties

ISO As welded
ElongationTensile StrengthYield Strength
AWS As welded
ElongationTensile StrengthYield Strength
25 %790 MPa610 MPa

Typical Charpy V-Notch Properties

AWS As welded
Impact ValueTesting Temperature
30 J20 °C

Typical Weld Metal Analysis %

MnMoCSiFerrite FNNiNCr
0.9 %0.04 %0.13 %0.7 %40 %10.2 %0.09 %28.9 %

Deposition Data

DiameterCurrentDeposition RateFusion time per electrode at 90% I maxkg weld metal/kg electrodesNumber of electrodes/kg weld metalVoltage
2.5 x 300 mm50-85 A0.9 kg/h48 sec0.64 kg7824 V
4.0 x 350 mm80-175 A2.0 kg/h66 sec0.62 kg2626 V
3.2 x 350 mm60-125 A1.3 kg/h65 sec0.62 kg4225 V
5.0 x 350 mm150-240 A3.2 kg/h68 sec0.65 kg1728 V
2.0 x 300 mm40-60 A0.7 kg/h41 sec0.64 kg12322 V

Approvals:CE, EN 13479, Seproz, UNA 272580
Classifications:EN 14700, E Fe11, EN ISO 3581-A, E 29 9 R 3 2, SFA/AWS A5.4, VAT, Werkstoffnummer, 1.4337

Approvals are based on factory location. Please contact ESAB for more information.

Alloy Type:IMPERIAL_Stainless duplex
Coating Type:Acid Rutile
Ferrite Content:FN 30 - 50
Welding Current:DC+, AC